Stem-winding watch.



' UNITED STATES PATENT OFFICE.

STEM-WINDING WATCH.

Specification of Letters Patent.

Patented May 8, 1906.

Application filed September 16,1904. Serial No. 224,703.

To all whom, it may concern.-

Be it known that I, NUMA BiiGUELIN, a citizen of the Republic ofSwitzerland, residing at Solothurn, Switzerland, have invented certainnew and useful Improvements in Stem-Winding Watches, of which thefollowing is a specification.

This invention relates to a keyless mechanism for winding up and settingthe hands of watches whereby according as the winderstem is pushed moreor less inward the hands will be set or the going-spring wound up.

A construction of the mechanism according to this invention isillustrated by way of example in the accompanying drawings, in whichFigure 1 is a plan View, the parts being shown in the position for thewinding of the watch. Fig. 2 is a plan View with the parts arranged forsetting the hands. Fig. 3 is an under side view of the mechanismopposite to that of the Fig. 1, and Fig. 4 is a detail View of thewinding-stem.

The stem-arbor A, operated by asquare pin A, provided with a turn-buttonor knob A has loosely mounted upon it a crownwheel B. The lower squareportion A of the said arbor A carries a sliding ratchet-clutch C, whichcan be made by the action of a balance-lever D, pivoted at (1, either toengage with the minute-wheel pinion E for setting the hands or to becomecoupled to the crownwheel B'of the winding-gear. The arbor A is providedthroughout the whole of its length with a central cylindrical passage Ain which can move a pin F, provided at the bot tom with a head G, whichconstantly presses against a slide H, mounted between the two covers andhaving guide-grooves I, whereby it can move in the direction parallel tothe axis of the pin F, being guided by two headed screws J. The slide His provided on its under side with a pin or projection K, passingthrough the plate L, through an elongated opening M therein, and has afinger or projection H projecting in the path of the head G of the pinF. The pin A when pushed inward, Figs. 1 and3, causes, through theintermediary of the headed pin F, the slide H, Fig. 3, to move inward.The pin K no longer presses the lever D outward; but the spring N causesthe lever D to swing inward, thereby pushing the sliding clutch C towardthe crown-wheel B and causing its teeth to engage the lateral teeth Bthereon to effect the winding up of the going-spring on turning of theknob A On the other hand, if the pin A is moved slightly outward or notpressed fully in, as shown in Fig. 2, the pin F will move inward in thebore A of the sleeve A under the influence of the spring P (which isstronger than the spring N) acting on the pin K of the slide H, therebymoving the latter outward, the pin K forcing the end of the lever Doutward and causing the other end of the lever D to swing and carry thesliding pinion O toward the minute-wheel pinion E, with which it engagesfor setting the hands of the watch by turning the knob A The winding andsetting pin can be secured from complete withdrawal from the watchcasingin any usual or suitable manner.

What I claim as my invention, and desire to secure by Letters Patent, is

1. A watch hand setting and winding mechanism comprising alongitudinally-movable winding and setting pin, a rotatable sleeve, acrown-pinion loosely mounted on said sleeve, a double clutchlongitudinally movable on said sleeve, a slide operated by the windingand setting pin, a pin on said slide, a strong spring acting againstsaid pin, a pivoted clutch-operating lever and a spring acting againstthe tail of said lever in opposition to the first-named spring,substantially as set forth.

2. In a watch hand setting and winding mechanism the combination of arotatable hollow sleeve of part circular and part angular bore, awinding and setting pin adapted to engage and move longitudinally in theangular portion of the bore, a pin longitudinally movable in thecircular bore of said sleeve, a head on the bottom end of the pin, acrownpinion loosely mounted upon the sleeve, a double clutchlongitudinally movable on said sleeve, a slide adjusted to move in adirection parallel to the axis of the setting-pin, a projection on saidslide, said projection being adapted to be engaged by the headed pinmoving longitudinally in the circular bore of the sleeve, a pin on theslide, a strong spring acting on said pin and tending to move the nameto this specification in the presence of slide upward against the headedpm, a plvtwo subscrlblng Witnesses. oted 'cluteh-operatlng lever and aspring a0t- T ing against the tail of'said lever in opposition NUMABLGUELIB' t0 the first-na1ned spring substantially as set Witnesses:forth. R. MossMANN,

In testimony whereof I have signed my A. FROELICHER.

